Re: NSLayoutManager question
Re: NSLayoutManager question
- Subject: Re: NSLayoutManager question
- From: Brian Webster <email@hidden>
- Date: Mon, 3 Feb 2003 16:11:38 -0600
NSTextContainer would be better suited to doing this than
NSLayoutManager. If you write your own subclass of NSTextContainer,
you can use it to define what regions of a text view you want text to
flow into. So, your subclass would only allow ten characters at a time
to be laid out, putting a gap in between each line fragment. Take a
look at the "Text System Storage Layer" programming topic in the Cocoa
docs for more info on how to write an NSTextContainer subclass.
On Monday, February 3, 2003, at 03:51 PM,
email@hidden wrote:
In my app I display a sequence of letters (aminoacids in a protein).
To make the string more readable, a common feature in many apps is to
add a space after each ten amino acids. So last night I was trying to
add this feature. What I did was each time the sequence is edited, I
remove all spaces and then I iterate the string backwards and add a
space in the correct position. This works. However, I also need the
string *without* the spaces for calculations, such as pattern
matching, or molecular weight calculation.
Then it occurred to my that I was trying to manipulate the model
(protein string) in the view (MyNSTextView), so I was wondering if I
can, and how, do the spaces by using the NSLayoutManager. Another
thing I could do is to keep a copy of the protein around *without*
the spaces that I use for the calculations, and use the 'original'
string of the NSTextView for the display.
Any suggestions on this?
--
Brian Webster
email@hidden
http://homepage.mac.com/bwebster
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